<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>回顾Object.defineproperty</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>

    <script type="text/javascript">
        let obj1={x:100};
        let obj2={y:200}; 

        Object.defineProperty(obj2,'x',{
            get(){
                return obj1.x
            },
            set(value){
                obj1.x=value;
            }
        })
    </script>
</body>
 
</html>